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  • 1
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    The SASS scattering coefficient algorithm (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: This paper describes the algorithms used to convert engineering unit data obtained from the Seasat-A satellite scatterometer (SASS) to radar scattering coefficients and associated supporting parameters. A description is given of the instrument receiver and related processing used by the scatterometer to measure signal power backscattered from the earth's surface. The applicable radar equation used for determining scattering coefficient is derived. Sample results of SASS data processed through current algorithm development facility (ADF) scattering coefficient algorithms are presented which include scattering coefficient values for both water and land surfaces. Scattering coefficient signatures for these two surface types are seen to have distinctly different characteristics. Scattering coefficient measurements of the Amazon rain forest indicate the usefulness of this type of data as a stable calibration reference target.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: IEEE Journal of Oceanic Engineering; OE-5; Apr. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Seasat scatterometer - Results of the Gulf of Alaska workshop (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The Seasat microwave scatterometer was designed to measure, globally and in nearly all weather, wind speed to an accuracy of plus or minus 2 meters per second and wind direction to plus or minus 20 deg in two swaths 500 kilometers wide on either side of the spacecraft. For two operating modes in rain-free conditions, a limited number of comparisons to high-quality surface truth indicates that these specifications may have been met.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Science; 204; June 29
    Format: text
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    NASA TECHNICAL REPORTS
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